Nasal air purifier



FIG. 1 is a front perspective view of the nasal air purifier;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the nasal air purifier and form no part of the claim. 

CLAIM The ornamental design for a nasal air purifier, as shown and described. 